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As I wrote before I picked some Vitavox S3 driver.

http://www.GoodSoundClub.com/TreeItem.aspx?PostID=8619

and I was expediting with them recently to use in Fundamental Chanel. My idea was that S3 might care LF knee better then S2. In past I had S3 and I discard in rivalry with S2 as S2 was much more interning in HF region. The ceramic driver of S3 needs different type or amplification that I do not use. However, at that time I did not use Fundamental Chanel.

There are some advantages in S3 design that feel might be beneficial for sub 1K use of S3 drivers. The S3 had more accurately made output channel. I think it shell more benefit FH but who knows… Also, and this is a very big for me the S3 has the diaphragm plate decupled from the back plate. This decupling is very bad thing in S2.

So, I mounted the S3 into the Fundamental Chanel and spent some time to listening this channel. I have to say that I like it but not what I expected. What I expected the S3 does very well – it runs at 600Hz with first order with no “issue” in the bottom region (250Hz Tratrix horn). The next step will be lowering the crossover point to 500-550Hz (that are ultimate objectives) but I need to open the Melquiades amps to do it. What however very much surprised me is the dynamic confidence with witch S3 cares the duty at 600Hz - very imprecise. The S2 was if not dying but really at the very last octave of it’s potency. If I run the Fundamental with S2 at 0dB in relation to MF then I felt it. Since I run the Fundamentals at minus ~ 9dB then the S2 was doing fine. The S3 does have more dynamic balls and it looks like at 600Hz it is still very much not “there”. It would be interning to drop crossover point with S3 at try it in 180Hz-210Hz horn.

I do not have a final decision if I go there. I defiantly will not go for 180Hz-210Hz horn. If I use the S3 then now much I will be able to drop in crossover until my 250Hz hors will feel it. The S3 is shorter then S2, so I would need to re-alight Fundamental Chanel. Still it look like S3 has more power handling at the same frequency, or perhaps it the original “high-pressure” clear diaphragms that my drivers came with. In any cases, the result so far stimulating to stick with S3 for LF region.

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